I think there is one thing that need to be checked out is how does the dog react when someone wake it up while sleeping. I know some dogs hate to be bothered when sleeping , I know a person that got bitten on his hand when he touch the family dog during a nap. The dog was put down as the guy had two small kids and did not trust the dog around them. He had no idea how his dog was going to react and was glad one of his children was not bitten in the face.